Using this soap dispenser is easy. First, select your power supply, either the battery pack with 4xAA alkaline batteries or the A/C adapter. Then, fill the 70.5oz soap tank through the top - fill opening with any non - proprietary bulk foam soap. Wave your hand in front of the dispenser, and the touch - free dual sensor will activate to dispense soap. The indicator light at the base of the spout will let you know if it's powered on, when it's activated, and when the soap is running low. Remember, this is a non - returnable item. For maintenance, clean the dispenser regularly with a soft cloth. Avoid using abrasive cleaners as they might damage the brushed nickel PVD finish. Keep it away from sharp objects to prevent scratches. Since it has a vandal - resistant construction, it should hold up well in public areas, but still handle it with care. Also, make sure it complies with ADA guidelines when installing it in relevant locations.